US712918A

US712918A - Nut-lock.

Info

Publication number: US712918A
Application number: US10077202A
Authority: US
Inventors: William D Evans; Josiah C Wiggins
Original assignee: Individual
Current assignee: Individual
Priority date: 1902-03-31
Filing date: 1902-03-31
Publication date: 1902-11-04
Anticipated expiration: 1919-11-04

Description

` v NUT Lock. I

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WILLIAM D. EVANS AND JOSIAII C. WIGGINS, OF EUPORA, MISSISSIPPI.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 712,918, dated November 4, 1902.

Application filed March 31, 1F02.

To all whom iff/.may concern.:

, construct a nut-lock which may be used with equally good results upon metal or upon Wood,` which may be universally used and expeditiously and conveniently applied, and which also when once adjusted cannot be shaken loose.

Another purpose of the invention is to con-` struct the nut-lock in such manner that it may be so set that the nut canv be forced by a Wrench, if desired, or so that the lock cani be loosened only bythe use of' a chisel or similar pointed tool.' Y

The invention consists in thenovel construction" and combination of 'the several parts, aswill be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, formiu g a part of this specification, in which similar characters of. reference in-` dicate corresponding parts'in all theflgures.

Figure 1' is a plan'viewofwhatwe call a spring chuck-Washer used inthe construe-v tion of the nut-lock. Fig. 2 is an edgepview of the Washer shoyvnin'Fig. 1. Fig. 3 is an inner face vieW of the nut used in connection with the Washer shown in Figs. 1 and 2. Fig. Ltis a section through the nut. Fig. 5 is a transverse section through a railway-rail and fishplates anda s ectional side elevation of the nut-lock employed. Fig 6 is a perspective view ofa slightly-modified form of chuck- Washer. Fig. 7 is a perspective view of the nut used `in connection with the Washer shown in Fig. and Fig. 8 is a perspective view of the countersunk Washer which is used in connection with the nut-lock when it is applied to objects of Wood.

A represents a railway-rail, and B the fishplates, which fish-plates and the Web of the Serial No. lO,772. (No model).

rail are provided with the usual openings 10 for the passage of an ordinary bolt C. Where the threaded end of the bolt-passes through the fish-plate or other article of metal a countersink 11 is made at the outer end of the opening; but if the bolt be passed'through Wood or other soft material a Washer 12 is employed, (shown in Fig. 8 and having a central conntersink 13, )which Washer 12 is passed over the'threaded endvof. thev bolt to an engagement with the object through which the ybolt extends. v

What we term a chuck-Washer D, (shown in Figs. 1,v 2, 5, and 6,) constitutes a veryimportant factor in the construction of the nutlock. This Washer is made of spring-steel of suitablethiclness and is transversely cut or split, so that a space of predetermined width occurs between its ends. The outer side surface 14. of the washer is inclined-from its free edge 4in direction of the inner. surface of .the Washer, so that exteriorly the Washer rep- .resents the frustum ofa cone; but the inner surface 15 of the Washer is circular and transversely straight; so that the chuck-Washer inaybe readily4 slid over the threaded end of thebolt C. The chuck-washer D is of such size and the bevel of its outer side 14 is such that the Washer Dwill fit in the countersink V11 or in the countersink 13 of the bearing- Washer 12. l

The front surface of the chuck-Washer D is'flat or rounded, and-at vone end of the Washer a transverse rib 16 is produced upon its front face, which rib may bemore or less sharp or rounded, as shown inv Figs. l and 2, or flat, as is illustrated in Fig. 6, while at the opposite end of the Washer a sharp inwardlyprojecting spur 17 is made, which extends beyond the inner face of the Washer, the inner diameter of the vWasherbeing such as to ad mit of it readily slipping over thebolt with the vspur 17 near to or practically, in engagement With the bolt. After the tapering surface of the chuck-Washer D is'seated in the countersink prepared to receive it and the nut E is screwed home on the bolt C, thus forcing the Washer inward, the Washer Will be subjected to a choke grip, and its ends Will be crowded in direction of each other, forcing the spur 17 into the thread of the bolt C, tightly locking the Washer to the bolt IOO and eiectively preventing the latter from turning. The nut E is also locked in its adjusted position and is prevented from turning by reason of the rib l16 of the chuckwasher D entering one of a series of grooves 18 in the inner or contact face of the nut, as is shown in Figs. 3, 4, 5, and 7, which grooves radiate from the bore of the nut and extend to its outer side faces.

It will be understood that the cross-sectional shape of the grooves 18 will correspond to the cross-sectional shape of the rib on the washer D. When the rib on. the washer D is rounded, as is shown in Figs. l and 2, the grooves in the nut are substantially U-shaped in crosssection, and when the rib has entered one of the grooves, the nut being tightened, it is possible for the nut to be unscrewed with a monkey-wrench or suitable tool; but when the rib on the washer D is rectangular in crosssection and the grooves in the nut have the same crosssectional shape, as is shown in Figs. 6 and 7, when the nut is screwed home and the rib on the chuck-washer enters a groove in the nut it will be impossible to remove the nutthrough the mediu in ofawrench; but the nut may possibly be removed bythe use of a cold-chisel suitably applied.

It will be observed that the nut-lock described and shown is exceedingly simple and is effective and that it may be applied wherever a lock for a nut is needed.

Having thus described our invention, we claim as new and desire to secure by Letters Patent- 1. In a nut-lock, a transversely-split nutwasher of spring material, having a beveled outer side surface and provided at one end 2. The combination with a countersunkA seat, a bolt adapted to be passed through the said seat, a split spring-washer for the bolt, having its outer side surface beveled to Iit the said countersunk seat and provided at one end upon its front surface with an inwardlybent terminal lug, which lug is sharp and extends beyond the inner surface of the washer, and a nut for the bolt, having groovesin its inner or contact face to receive the rib on the washer, for the purpose described.

3. In a nut-lock, the combination with a beveled seat and a nut having grooves in its inner face, of a split spring-washer having its outer side surface beveled, being provided at one end upon its front face with a transverse rib adapted to enter a recess in the nut, the transverse rib being of the same cross-sectional shape as the crosssectional shape ot' the groove in the nut, the opposite end of the said Washer being provided with an inwardlybent lug extending beyond the inner surface of the washer, all combined for the purposes specified.

In testimony whereof We have signed our names to this specification in the presence of two subscribing witnesses.

WILLIAM D. EVANS. JOSIAH C. WIGGINS.

Witnesses:

LEE WILSON, J No. T. MARSHALL.